11
Alexander Graham Bell failed 31 times
2
Alexander bell had 2 brothers
Alexander Graham Bell was never actually in a coffin; he was alive throughout his life until his death in 1922. There are no historical accounts or records indicating that he experienced any incidents where he was in a coffin. Thus, the answer is zero times.
10
Alexander Graham Bell had 18 patents issued to him only, and 12 issued to him and collaborators.
2
Two Brothers
he had 8000 kids
2
He loved to invent many things.
There is no record of how many attempts or experiments made. It is safe to assume there were several